Home Blog 5 Reasons You Have Tight Hamstrings

5 Reasons You Have Tight Hamstrings

Written on June 12, 2012 at 9:13 am, by Eric Cressey

There might not be a more obnoxious and stubborn athletic injury than the hamstrings strain.  When it is really bad, it can bother you when you're simply walking or sitting on it.  Then, when a hamstrings strain finally feels like it's getting better, you build up to near your top speed with sprinting - and it starts barking at you again.  In other words, a pulled hamstrings is like a crazy, unpredictable mother-in-law; just when you think you've finally won her over, she brings you back down to Earth and reminds you how much more she liked your wife's old boyfriend.

However, not all hamstrings pain cases are true strains; more commonly, they present as a feeling of "tight hamstrings."  If one is going to effective prevent this discomfort, rehabilitate it, or train around it, it's important to realize what is causing the hamstrings tightness in the first place.  Here are five reasons:

1. Protective Tension of the Hamstrings

This is readily apparent in someone who has a crazy anterior pelvic tilt, which puts a big stretch on the hamstrings, which posteriorly tilt the pelvis.  When someone is extremely anteriorly tilted, the hamstrings are constantly "on" to prevent someone from ending up with extension-based back pain, such as spondylolysis (vertebral fractures), spondylolisthesis (vertebral "slippage"), and lumbar erector tightness/strains.  This is a problem most commonly seen in females (greater anterior pelvic tilt than men) and athletes:


Doing a lot of longer duration static stretching for the hamstrings in this population usually isn't a great idea, as you run the risk of making someone more unstable - particularly in the case of females, who have less rigid ligamentous restraints (more congenital laxity) to protect them.  To that end, our approach with these folks is to use the warm-ups to foam roll the area, then do some hamstrings mobilizations to transiently reduce stiffness in the hamstrings.

After this reduction in stiffness, we work to build stability in synergists to the hamstrings in posterior pelvic tilt.  In other words, there's a heavy emphasis on glute activation and anterior core recruitment both with a strength training program and postural reeducation for the other 23 hours of the day.

At the end of the training session, with the male athletes, we may do some shorter duration hamstrings stretching just to "dissipate" a little eccentric stress.  I like ten seconds in each of these three positions:






The thing to remember is that while you can do everything right with these athletes in training, what they do with their posture during the rest of their lives is of paramount importance.  If they continue to stand around in anterior tilt and don't help the new stiffness they've developed "stick," they'll continue to over-rely on their already tight hamstrings.

2. Neural Tension

Just because you feel hamstrings tightness doesn't mean that the hamstrings are actually the source of the problem.  In fact, it's not uncommon at all for those with lumbar disc issues to present with radicular pain, tightness, or numbness/tingling into the legs - especially the hamstrings.  The symptoms may also come from nerve entrapment (most commonly the sciatic nerve) on soft tissue structures further down the chain.  Just aggressively stretching the hamstrings can actually make these symptoms worse, so it's important to see a medical professional to rule out causes further up with the appropriate clinical exams, such as the slump test.

3. Truly Tight Hamstrings

In order for hamstrings to really be short, one would have to spend a lot of time with the knee flexed and hip extended - so just imagine the position you're in at the top of a standing leg curl.  That's a hard pose to hold for an extended period of time, much less do so on a regular basis.

That said, some folks do get somewhat close to that on a daily basis in the sitting position, and are therefore the most likely to really have "tight hamstrings." They have to be in posterior pelvic tilt and knee flexion for a considerable chunk of the day - and even then, it's still pretty tough to be truly short, as they are still in hip flexion.

These folks usually can't distinguish hip flexion from lumbar flexion, so if you do a standing hip flexion assessment, rather than maintain the neutral spine we see in this photo, they'll go into lumbar flexion (butt will "tuck under").

The same trend will usually be noticeable with any kind of squat unless they have a tremendous amount of core stiffness to overcome the posterior hip stiffness that's present.  If you test these folks on an straight leg raise, it isn't pretty, as the pelvis is already posteriorly tilted.  In a pelvis that starts in "neutral" on a straight leg raise, roughly the first 1/3 of movement that you see comes from posterior tilt of the pelvis before the femur ever starts to flex on the acetabulum of the pelvis.  These folks are usually already posteriorly tilt, so that 1/3 is already used up; you're really only measuring hip flexion and not hip flexion PLUS posterior pelvic tilt.  And, as you can imagine, if someone is truly short in the hamstrings, that straight leg raise isn't going to be pretty. Obviously, these folks usually have a terrible toe touch pattern as well.

This should also educate you on why you can't treat all hamstrings strains the same.  In the protective tension example earlier, we needed to work to regain stability to hold a position of a bit more posterior pelvic tilt.  We'd cue glute activation, and use exercises that draw folks back into posterior tilt (e.g., reverse crunches).  If you have someone has a pulled hamstrings because they are truly short from already being in posterior pelvic tilt, though, some of these cues and exercises would be contraindicated. You'd be feeding the dysfunction.

While manual therapy and stretching for the posterior hip is valuable, again, it must be followed by stabilization work at adjacent joints with the pelvis in a neutral position.  These folks can benefit from training hip flexion above 90 degrees as well, as it educates them on how to flex the hip without rounding the lumbar spine.  This is one reason why I think a lot of the chop and lift exercises we've learned from Gray Cook are so fantastic; they teach us anti-rotation and anti-extension stability in various positions of hip flexion while the pelvis is in neutral.  They make changes "stick" better.

4. Previous Hamstrings Strain

Not to be overlooked in this discussion is the simple fact that the single-best predictor of hamstrings strains is a previous hamstrings injury.  One you have an injury, that area may never be the same from a tissue density standpoint - whether it's the surrounding fascia or the muscle or tendon itself.  A previous injury can leave athletes feeling "tight" in the region, so regular manual therapy can certainly help in this regard.

Anecdotally, the athletes with the long-term problems seem to be the ones with the pulls up on the gluteal fold, right where the hamstrings tendons attach to the ischial tuberosity.  The area gets "gunked up"in a lot of athletes as it is because of all the tissues coming together and exerting force in a small area, but it's especially problematic in those who have a previous injury in the region.  Perhaps more problematic, though, is the fact that we sit on our proximal hamstrings attachments - and that isn't exactly good for blood flow and tissue regeneration.


I haven't seen any research on it, but I have a feeling that if you looked at this region in a lot athletes with ultrasound (similar to this study with patellar tendons), you'd find a ton of people walking around with substantial degenerative changes that could be diagnosed as tendinosis even though they haven't actually hit a symptomatic threshold.  My guess is that it's even worse in the posterior hip region because a) we sit on it, b) the ischial tuberosity is a more "congested" area than the anterior knee), and c) the study I noted above used 14-18 year-old athletes, and degenerative problems will get worse as one gets older (meaning this study likely undercut the true prevalence across the entire population).

Very simply, an athlete with a previous hamstrings strain needs to stay on top of quality manual therapy on the area, and be cognizant of maintaining mobility and stability in the right places.  They have less wiggle room with which to work.

5. Acute Hamstrings Strain or Tendinosis

Of course, the fifth reason you hamstrings might be tight is because you might actually have a hamstrings injury!  It could be an actual hamstrings strain, or just a tendinosis (overuse issue where tissue loading exceeds tissue tolerance for loading).  There is no one perfect recommendation in this regard, as a tendinosis or grade 1 hamstrings strain is going to be much more tolerable than a grade 3 hamstrings strain where you have bruising all along the back of your thigh.  

In terms of maintaining a training effect with the less serious ones, here are a few suggestions:

a. When you are ready to deadlift, use trap bar deadlifts instead of conventional or sumo deadlift variations.  I explain a bit more about how the positioning of the center of gravity makes this more hamstrings friendly HERE.

b. Shorten up your stride on single-leg exercises.  This makes the movement slightly more quad dominant, but allows you to still get the benefits of controlling the frontal and transverse planes with appropriate glute and adductor recruitment at the hip.

c. Go with step-up and reverse sled dragging variations.  Eliminating the eccentric component can take a considerably amount of stress off the hamstrings, and both these exercises get the job done well.

d. If you're going to squat, start with front squats at the beginning, and reintegrate back squat and box squat variations later on, as they will be more hamstrings intensive.

e. Understand anatomy.  If you are in hip flexion and knee extension, you're going to really be stretching the hamstrings and likely irritating them in the process.  Select exercises that don't hit these painful end-ranges, and then gradually reintroduce more dramatic ranges of motion as the issues subside.

f. Do hill sprints before you do regular sprints.  Your stride is going to be a bit shorter with hill sprints, and that'll take a considerable amount of stress off the hamstrings at heel strike (pretty good research on uphill vs. downhill sprinting HERE, for those who are interested).  Just don't go out and run as hard as you can the first time out; propulsive forces are still quite high.

Of course, this just speaks to how to train around a pulled hamstrings; there is really a lot more to look at if you want to really understand why they occur and how to prevent or address them.  In my eyes, this post was necessarily "geeky," as it is important that we don't dumb down complex injuries to "just stretch it out."  This recommendation is analogous to a doctor just telling someone to take some NSAIDs for regular headaches; it doesn't get to the root of the problem, and it may actually make things worse.

For more information, I'd encourage you to check out the Functional Stability Training series.

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65 Responses to “5 Reasons You Have Tight Hamstrings”

  1. mitch Says:

    Greeting from Australia, I was wanting to know what your thoughts are on Voodoo floss bands? Do you think that by applying immense pressure to a certain area of the body will improve mobility and the mechanics of a joint?

  2. Simon Fowler Says:

    Another quality read !

    I am finding many young athletes are complaining of this to. One cause of this is down to excessive time spent in the fetal position whilst playing video games and watching tv. My advice is the obvious to them.

  3. Debbie Says:

    I’m resting during the recovery period offer the surgery but once I started pt I walk about 5 mi every other day. Like others once you injure in my case tear your a little scared to beyond your comfort range. On days when I do a walk, no pain but when I go to drive its a little difficult getting out of the car and those first few steps.

    Rehab is not for sissies but sometimes it makes you one.

  4. Eric Cressey Says:


    For a traumatic, post-surgery case, I’m really hesitant to throw out advice on the internet. I’d defer to your physical therapist 100% on this one.

  5. Eric Cressey Says:


    There may be some merit for some folks. Compression certainly has a lot of applications.

  6. Steve Says:

    Hi Eric, thanks for the great article and all of the helpful information you offer on your site!

    I have been doing strength training for a couple of years and am currently on Wendler’s 5/3/1 program. I also have slight APT. I have never been able to touch my toes with straight legs which I assumed was from tight hamstrings, which is now confusing me a little bit. From what I’ve learned, APT typically corresponds with tight quads / hip flexors, weak abs, and stretched hamstrings. So is it possible that I have APT AND tight hamstrings?

    Another thing I find very frustrating is my limitation when doing ab work. I am unable to keep my legs straight when doing movements like hanging or lying leg raises, which I thought was because of tight hamstrings. My back also feels uncomfortable before my abs get tired forcing me to stop early. I tried doing Pilates to strengthen my core, but I’m not sure if this is the best thing for me right now.

    Do you have any thoughts / recommendations on my situation?

    Thanks so much for the help. I really appreciate it!

  7. William Dutton Says:

    This is the best article I have ever read regarding hamstring troubles. I am an athlete a speed skater specifically who has been struggling with hamstring problems after tons of research I found no real solutions. This makes sense, I am very excited to start using these exercises. Thank you for sharing your knowledge and successful treatments.

  8. Frankie Says:

    Hello Eric,
    My name is Frankie nice to meet you! I need a little bit of help. About three or four years ago I had an old truck that forced me to reach in order to touch the gas pedal I usually drove a long distance to the local university which wasn’t very local and by the time I step out of the truck I could barely stand on my right leg for the first few minutes this went on for the better part of the year. I have recently started doing the roller stretch technique and is that his help me immensely. But still when I sit in class or in a chair for a long time when I stand up my hamstring is very tight and in discomfort not pain but discomfort. Since you seem knowledgeable about hamstring injuries I didn’t know if this had any of the earmarks that you could direct me toward a course of treatment or if you would recommend a specific type of practitioner or therapists that I could see to address my needs more personally. Any information you have would be greatly appreciated thank you very much for your time.

  9. Jerry Says:

    What an awesome article! I have a daughter who is a very strong middle distance runner for a major D1 school. She has battled super tight hamstrings for awhile now and with the increased mileage per week, the tightness is really starting to effect her performance in races. After 800 meters in the Mile race, she said that the burning and tightness in the hamstrings is all that she can focus on 🙁 You pegged her exactly in #1 above as her standing posture for the other 23 hrs per day is almost exactly like the picture you show! My question is – if she commits 100% to making the changes in her posture and commits to the exercises, would you have an approximate timeframe when you think she might see some relief during the quality workouts and races?
    Thank you soooo much!

  10. Josh Says:

    Great post! You have certainly highlighted for me personally some factors I need to consider! Thanks a lot

  11. Eric Cressey Says:


    It’s really difficult to say, as it depends heavily on whether she has any true pathology, what her training experience is, and how adherent she is to the program.  It’s a really individual thing.  Sorry I couldn’t be more specific!

  12. Tom Says:

    I have right leg hamstring pain and right ankle pain along with low back pain. I know I got this as a cause from slouched sitting in front of a computer as I was unemployed during that time. Your article suggests this is due to anterior pelvic tilt. But I have read that people who sit in a slouched position where the pelvic tilts back are in the category of posterior pelvic tilt. My question is does it matter if one has anterior or posterior to do your suggested exercises/stretches?

  13. max ellis Says:

    I am soon to turn 67 yrs old , male. when I was about 28 I snapped my hamstring playing cricket. I went to a Dr. and was told rest is the best treatment. over the cricket years it kept happening until I stopped playing at 40. I done it again in 2010 coaching a boys basketball side during a demo I what I wanted them to do. Now the troubles started lower back, hip, thigh muscle at front of leg and often get pain down leg to ankle. Not much fun now, any suggestions.

  14. bill Says:

    Think of the way the pelvis is tilting forward when sitting, this is a tilt to the anterior. and yes they would differ, as one is the agonist the other the antagonist movements of the pelvis. so yes it does matter

  15. Mark O Says:

    I can definitely run up a hill a lot better than I can run flat. My hamstrings are extremely tight — I think from sitting at a computer so often. I will start some of these pelvic tilts, chop and lift, hip thrusts, roll outs, 1 leg SLDLs today. Thanks Eric.

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